To develop innovative solutions to urban challenges via a co-creation platform involving collaboration among all stakeholders–government authorities, designers, businesses, and local communities–technological applications that facilitate interactions must be integrated from the earliest stages of urban development projects. However, such collaboration is often hampered by the lack of effective platforms for communication and exchange, particularly given the difficulty of achieving consensus between experts and non-experts. Local communities often struggle to comprehend technical architectural and urban designs and clearly express their needs and ideas. This study applied hologram technology and computer vision to create an interactive platform that enhances engagement among stakeholders in architectural and urban design projects. The proposed system was implemented as a digital co-creation platform on a university campus in Vinh Long, Vietnam. This technology-driven platform allows users to experience and interact with new designs, communicate their opinions and needs, and enables the design team to make responsive adjustments. This proposed approach optimizes collaboration, fosters innovative designs outcomes, and can be easily replicated in future architectural and urban projects.